EP4125765A1 - FUßROTATIONSVORRICHTUNG - Google Patents
FUßROTATIONSVORRICHTUNGInfo
- Publication number
- EP4125765A1 EP4125765A1 EP20841874.9A EP20841874A EP4125765A1 EP 4125765 A1 EP4125765 A1 EP 4125765A1 EP 20841874 A EP20841874 A EP 20841874A EP 4125765 A1 EP4125765 A1 EP 4125765A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotation
- foot
- cam
- track
- block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G13/00—Operating tables; Auxiliary appliances therefor
- A61G13/10—Parts, details or accessories
- A61G13/12—Rests specially adapted therefor; Arrangements of patient-supporting surfaces
- A61G13/1205—Rests specially adapted therefor; Arrangements of patient-supporting surfaces for specific parts of the body
- A61G13/125—Ankles or feet
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices ; Anti-rape devices
- A61F5/37—Restraining devices for the body or for body parts; Restraining shirts
- A61F5/3761—Restraining devices for the body or for body parts; Restraining shirts for attaching the limbs to other objects
Definitions
- the invention relates to a foot rotation device of an operating table according to the preamble of the first claim.
- a foot rotation device is known, US 2017/0056234 A1, which is equipped with a foot rotation device arranged on a pivotable arm with a foot receiving shell with a heel-side fastening block and a rotation block extending therefrom into a rotation block provided with a locking device.
- the rotation block gives the user the opportunity to rotate the patient's foot or leg around its longitudinal axis during an operation and fix it in a desired position.
- this is effected by a clamping screw which presses on the radius of a clamping ball mounted in the rotation block.
- the disadvantage of this known prior art is that the angular fixation depends on the tensioning force of the clamping screw and is therefore different from user to user and possibly too strong or too weak, which is the case with a severely twisted patient's foot or leg and the resulting high torsional force can lead to slipping of the rotation block.
- Another disadvantage is that, in order to increase the torsion during an operation, the user has to loosen the clamping screw with one hand and twist and hold the patient's foot and thus the patient's leg with the other hand until he has tightened the clamping screw again sufficiently. Situations in which a strong user uses a clamping screw so strongly are also disadvantageous has attracted the fact that another user cannot loosen it, which can seriously disrupt the course of the operation.
- the object of the invention is to provide a foot rotation device on an operating table which can be fixed in any desired position independently of manual tensioning forces, and this should be easy and reliable for everyone to do.
- the rotation is blocked by pawls of the ratchet, which engage in at least one ratchet wheel, the angular fixation being realized after preselection of the direction of rotation by the positive engagement of one or more preloaded locking levers in one or more ratchet wheels.
- a detent is always angularly stable, even with high torsional forces, and if the torsion has to be increased during an operation, the user only has to continue turning the patient's foot with one hand in order to further twist the patient's entire leg.
- the ratchet wheel then automatically takes over the re-fixation without having to operate a clamping screw that rests on a clamping ball with a friction fit.
- two locking gears with oppositely formed radial locking notches are slightly spaced from one another on a common one in the rotation block Shaft which is connected to the extension and between which a switching cam of the operating rotary handle extends, two locking levers with pawls being pivotably mounted in the rotation block about axes parallel to the axis of rotation of the shaft, which rest with control cams on the switching cams of the operating rotary handle, depending on the angle of rotation of which at least one pawl engages in its associated ratchet wheel or is lifted away from it.
- the locking or unlocking of the rotary movement in one of the two possible directions takes place here only by simply switching the rotary handle, since then, depending on the angle of rotation, one or both pawls engage in their associated ratchet wheel or are lifted off it.
- An embodiment of the invention is particularly advantageous in which the switching cam extends between the locking levers, which in turn have control cams which rest elastically pretensioned by a spring on a cam track of the switching cam.
- This has a circular cylinder-like basic shape, with the cam track extending over about half of the circumference from a circular cylinder-like section with a smaller diameter than that of the basic shape, forming an inner track, to which curved cam tracks adjoin on both sides up to the larger diameter of the basic shape , the cam track being completed by a section with the diameter of the basic shape, forming an outer track.
- FIG. 1 shows a foot rotation device of an operating table in a three-dimensional view
- FIG. 3 - 6 sectional views of the ratchet in different switching positions
- FIG. 11 shows an enlarged left locking lever
- FIG. 12 shows an enlarged right locking lever
- FIG. 13 shows an enlarged left ratchet wheel
- FIG. 14 shows an enlarged right ratchet wheel
- the foot rotation 1 of a foot rotation device of an operating table is arranged on a pivotable arm to which it is fixed in a height-adjustable manner via a profile tube 25. It also has a handwheel 24 in order to be able to bring a foot-receiving shell 2 with a patient's foot or a patient's leg stored therein during an operation into a stretched position.
- a fastening block 3, into which a locking block 23 of the rotation block 4 extends, is arranged below the foot-receiving shell 2 in the area on the heel side. on which an extension 5 engages, which is designed as a joint piece and extends into the housing 20 of the rotary block 4 and is connected there to the shaft 10 mounted therein.
- the rotation block 4 is designed as a toothed lock for two directions of rotation and for this purpose has two ratchet gears 7; 8 with opposing radial locking notches 9, the two locking gears 7; 8 being arranged at a distance from one another on the common shaft 10, between which a switching cam 1 1 of the operating rotary handle 6 extends, the switching cam 1 1 having a circular cylinder-like basic shape and with one is equipped with an inner track of reduced diameter over about half of the circumference and adjoining it, curved tracks that are curved except for the larger diameter of the outer track, which are followed by the outer track as the last section of the entire cam track 18 over the remaining circumference.
- the ratchet wheels 7; 8 are arranged parallel to the shaft 10 locking lever shafts 26; 27 two locking levers 12; 13 arranged, the pawls 14; 15 have which in the ratchet wheels 7; 8 can intervene or be positioned lifted therefrom.
- control cams 16; 17 equipped, which rest on the cam track 18 of the switching cam 1 1, the two control cams 16; 17 lie opposite one another, but not radially, but offset from a center plane by the switching cam 11 on the cam track 18, so that, depending on the angle of rotation of the actuating rotary handle 6, they either simultaneously rest on the inner track of the switching cam 11 or on its outer track or either one Control cam 16; 17 on the inner track and a control cam 17; 16 on the outer track of the cam track 18, so that a total of four switching positions are generated.
- FIGS 3 and 7 show a position of the switching cam 11 in two views, in which at a rotation angle of the rotary actuating handle 6 of 0 ° with complete free-wheeling of the shaft (10) on both sides, both pawls 14; 15 of the
- Ratchet wheels 7; 8 are lifted.
- Figures 5 and 9 show a position of the switching cam 11 in two views with complete locking of the shaft on both sides at 180 ° of the angle of rotation of the rotary actuating handle 6 in which the control cam 16; 17 both rest on the inner track of the cam track 18 of the switching cam 11, so that the locking lever 12; 13 around the locking lever shafts 26; 27 pivoted with their pawls 14; 15 into the ratchet wheels 7; 8 intervene and thus create a twist lock on both sides.
- Figures 4 and 8 or 6 and 10 represent with the rotary handle rotated by 90 ° or 270 ° 6 switching positions in which either the clockwise rotation of the ratchet wheel 7 or the left rotation of the ratchet wheel 8 and thus each of the shaft 10 is blocked, the in each case adjacent pawls 14; 15 in an opposite direction of rotation over the flatter flanks of the locking notches 9 can be briefly unlatched away.
- the pawls 14; 15 are permanently in the direction of the ratchet wheels 7; 8 held pretensioned so that a form fit in the blocked direction of rotation takes place at all times.
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020107943.5A DE102020107943A1 (de) | 2020-03-23 | 2020-03-23 | Fußrotationsvorrichtung |
| PCT/DE2020/101057 WO2021190678A1 (de) | 2020-03-23 | 2020-12-14 | FUßROTATIONSVORRICHTUNG |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4125765A1 true EP4125765A1 (de) | 2023-02-08 |
| EP4125765B1 EP4125765B1 (de) | 2025-03-05 |
Family
ID=74184322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20841874.9A Active EP4125765B1 (de) | 2020-03-23 | 2020-12-14 | Fussrotationsvorrichtung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4125765B1 (de) |
| DE (1) | DE102020107943A1 (de) |
| WO (1) | WO2021190678A1 (de) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1823248A (en) * | 1927-04-20 | 1931-09-15 | W D Allison Company | Examining table leg rest |
| US2067891A (en) * | 1935-12-27 | 1937-01-19 | Hospital Appliances Inc | Leg-supporting means for obstetrical beds |
| US4913413A (en) * | 1989-06-09 | 1990-04-03 | Faro Medical Technologies Inc. | Universal leg holder |
| US5918330A (en) * | 1996-08-14 | 1999-07-06 | Allen Medical Systems, Inc. | Ratchet mechanism for booted surgical stirrup |
| US8944065B2 (en) | 2013-03-22 | 2015-02-03 | Smith & Nephew, Inc. | Boot with lockable strap |
| AT14928U1 (de) * | 2015-04-22 | 2016-08-15 | Implantech Medizintechnik Ges M B H | Vorrichtung zur Positionierung der unteren Gliedmaßen eines Patienten während einer Operation |
-
2020
- 2020-03-23 DE DE102020107943.5A patent/DE102020107943A1/de not_active Withdrawn
- 2020-12-14 EP EP20841874.9A patent/EP4125765B1/de active Active
- 2020-12-14 WO PCT/DE2020/101057 patent/WO2021190678A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| EP4125765B1 (de) | 2025-03-05 |
| WO2021190678A1 (de) | 2021-09-30 |
| DE102020107943A1 (de) | 2021-09-23 |
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